• Account
  • View Shopping Cart

Menu Search View Shopping Cart Call Us

Spectra 1964 - Model V610 Channel Strip  From Spectra

A new concept in compression and limiting, that just happens to be decades old.

Spectra 1964


Retail:  $3,660.00

"Experience the Difference"

Sound Pure's 3-Year Warranty

Our Free 3-Year Warranty!
In addition to the standard included manufacturer warranty, virtually all new products carry our exclusive, industry-leading, absolutely free, Sound Pure 3-Year Warranty, which includes PARTS & LABOR. This high-value perk is our way of providing the ultimate in added value to enhance the unique personal touch our small, dedicated team contributes to each purchase.
Learn more »

Lifetime Support

Free Lifetime Technical Support!
Our small team of dedicated experts is here to help the original purchaser for the lifetime of the product. Why? Because we care about building real relationships with our customers for life and stand behind every product we sell.
Contact us for up-to-date delivery estimate.
Payments as low as $69/mo.

Manufacturer's Description from Spectra

In 1969, Spectra unveiled the Model 610 Complimiter, a revolutionary audio compressor and limiter. At the heart of the Model 610 was the 601 Compressor/Limiter module. This module allowed users to employ The Model 610’s compressor and limiter circuitry independently or simultaneously. Its low noise floor, ultra-fast peak limiting and intelligent compression earned the 610 its status as a classic studio compressor that is used by some of the best-known engineers in the industry.

The Spectra 1964 Model V610 Complimiter can be considered an evolution of the original Model 610, utilizing the very same 601 module with updates to fit in 21st Century workflows that include tracking, mixing and mastering. With amplifier stages based around the low-noise 110A amplifier circuit, the V610 is capable of 65dB of gain and +24dBu, making it a deft mic preamp in addition to its Complimiter functions.

In mastering applications, the V610 has detented/switched controls for precise recall of all parameters. The ultra-fast, fixed-timing peak limiter circuit operates fully within a 180 nanosecond range, transparently eliminating voltage transients without applying compression and effectively increasing the headroom of any device placed after the V610 in the signal chain.

The compressor circuit has a fixed attack around 100 nanoseconds, and variable release timing from 50 milliseconds to 10 seconds with full bandwidth at ratios from 1.1:1 up to 100:1, making it capable of both extremely transparent compression and hard compression. For tracking and mixing, the V610 can be used to do anything from subtle, automatic gain control, to invisible peak limiting for safeguarding analog-to-digital converters, or to dial in aggressive, fast-release, compression to add color to your sonic palette.


Though the heart of the Model V610 was designed nearly 50 years ago, its brilliant design still has specifications that go unrivaled in today’s industry, proving Spectra founder William G. Dilley was decades ahead of his time. And now, a new generation of engineers is discovering the “Spectra” sound for themselves.  

Spectra 1964

About Manufacturer

Spectra Sonics was founded by William G. Dilley, and was originally located in Ogden UT. The Spectra Sonics Legacy was aquired by a partnership of two former employees in 2007. The company was relocated from Ogden to Layton, UT. The same manufacturing techniques which were implimented by Spectra Sonics under its original ownership are still used today. All Spectra Sonics equipment is hand-tested and hand-soldered by a small team of specialists. All Spectra Sonics equipment undergoes rigorous hands on testing before leaving the factory. Much of the test equipment used was hand built in the original factory over 40 years ago.


Input Impedance: 600 Ohms
Output Impedance: 2.5k Ohms
Input Pad: Selectable -10dB, -20dB, -30dB
Maximum Gain: 65dB
Threshold attack level: -40 dBm
Maximum Output: +24dBu
THD: Less than .01% @ 30Hz-20KHz, at +22 dBm, up to 30dB compression, dependent on release setting
Signal/Noise: Better than 80dB below +4dBm output, with -40 dBm input, 20Hz to 20kHz
Frequency Response: +/- 0.1dB 20Hz-40KHz
Compression/Limiting Ratio: Continuously variable from 1.1:1 to 100:1
Attack time: 100 nanoseconds to 1.2 milliseconds, automatically variable.
Release Time: Continuously variable from 50 milliseconds to more than 10 seconds
Phantom Power: 48VDC